Re: [PATCH v19 07/19] tracing: Add ftrace_fill_perf_regs() for perf event
From: Heiko Carstens <hca@linux.ibm.com>
Date: 2024-11-10 17:05:53
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On Mon, Nov 11, 2024 at 12:50:09AM +0900, Masami Hiramatsu (Google) wrote:
From: Masami Hiramatsu (Google) <mhiramat@kernel.org> Add ftrace_fill_perf_regs() which should be compatible with the perf_fetch_caller_regs(). In other words, the pt_regs returned from the ftrace_fill_perf_regs() must satisfy 'user_mode(regs) == false' and can be used for stack tracing. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Will Deacon <will@kernel.org> --- arch/arm64/include/asm/ftrace.h | 7 +++++++ arch/powerpc/include/asm/ftrace.h | 7 +++++++ arch/s390/include/asm/ftrace.h | 6 ++++++
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390